Everyday math for money, health and life.
Free BMI calculator. Calculate your Body Mass Index in metric or imperial units and see your weight category instantly. Private, no sign-up.
Free percentage calculator. Work out what X% of Y is, what percent one number is of another, and percentage increase or decrease instantly.
Free tip calculator. Calculate the tip and split the bill between any number of people. Choose a tip percentage and see per-person totals instantly.
Free loan and EMI calculator. Calculate your monthly payment, total interest and total repayment for any loan amount, rate and term instantly.
Free age calculator. Find your exact age in years, months and days from your date of birth, plus total days, hours and your next birthday.
Free mortgage calculator with amortization schedule. Estimate your monthly home loan payment, total interest and payoff over the full term in seconds.
Free car loan calculator. Estimate your monthly auto payment from the vehicle price, down payment, trade-in, interest rate and loan term instantly.
Free compound interest calculator. See how savings grow with regular contributions, compounding frequency, rate and time, plus interest earned instantly.
Free simple interest calculator. Compute interest and final balance from principal, annual rate and time using the classic I = P x r x t formula.
Free sales tax calculator. Add sales tax to a price or work backwards from a tax-inclusive total to find the net amount and the tax portion.
Free discount calculator. Enter an original price and a percent off to see the sale price and exactly how much money you save. Supports stacked discounts.
Free investment and savings calculator. Project the future value of an initial deposit plus recurring contributions at a given annual return over time.
Free retirement calculator. Estimate your nest egg at retirement from your current savings, monthly contributions, expected return and years remaining.
Free ROI calculator. Measure return on investment as a percentage and net profit from an initial cost and final value, with optional annualized ROI.
Free VAT calculator. Add VAT to a net price or remove VAT from a gross price to find the net amount and the VAT portion at any rate you enter.
Free markup and margin calculator. From cost and price get profit, markup percent and gross margin percent, and see how the two differ clearly.
Free salary calculator. Convert an hourly wage into weekly, monthly and annual pay, or go from a yearly salary back to an hourly rate instantly.
Free debt payoff calculator. See how many months to clear a balance at a fixed monthly payment, the total interest paid and the true payoff time.
Free percentage change calculator. Find the percent increase or decrease between two numbers and the absolute difference, with the direction shown.
Free fraction calculator. Add, subtract, multiply or divide two fractions and get the answer reduced to lowest terms plus a decimal value instantly.
Free online scientific calculator. Evaluate expressions with trig, logarithms, exponents, square roots, pi and e, plus parentheses, all in your browser.
Free ratio calculator. Simplify a ratio to its lowest terms and solve proportions by finding the missing value in an equivalent ratio instantly.
Free average calculator. Enter a list of numbers to get the mean, median, mode, range, sum and count instantly, separated by commas or spaces.
Free standard deviation calculator. Get population and sample standard deviation, variance, mean and count from a list of numbers, computed instantly.
Free square root calculator. Find the square root of any number to high precision, plus the cube root, square and whether it is a perfect square.
Free GCD and LCM calculator. Find the greatest common divisor and least common multiple of two or more integers using the Euclidean algorithm instantly.
Free quadratic equation solver. Enter a, b and c to solve ax squared plus bx plus c equals zero, with real or complex roots and the discriminant.
Free TDEE and calorie calculator. Estimate your daily calorie needs from BMR and activity level, plus targets for cutting, maintaining or bulking.
Free BMR calculator. Estimate your basal metabolic rate, the calories your body burns at complete rest, using the accurate Mifflin-St Jeor equation.
Free body fat calculator using the US Navy method. Estimate body fat percentage from simple tape measurements of neck, waist and hips instantly.
Free ideal weight calculator. Estimate a healthy target weight from your height and sex using the Devine, Robinson and Hamwi formulas plus a BMI range.
Free pregnancy due date calculator. Estimate your due date from your last menstrual period using Naegele rule, plus current week and trimester.
Free date difference calculator. Count the days, weeks, months and years between two dates, with or without including the end date, instantly.
Free time zone converter. Convert a date and time from one time zone to another using your browser, with common cities and live daylight saving handling.
Free live countdown timer. Count down to any future date and time and watch the days, hours, minutes and seconds tick down in real time in your browser.
Free GPA calculator. Enter each course grade and its credit hours to compute your grade point average on the standard 4.0 scale, with total credits shown.
Free final grade calculator. Find out exactly what score you need on your final exam to reach the overall course grade you are aiming for.
Free weighted grade calculator. Combine assignments, quizzes and exams with their own weights to find your overall course grade, computed instantly.
Free test grade calculator. Enter the number of questions and how many were wrong or right to get your percentage score and letter grade instantly.
Free cumulative GPA calculator. Combine your previous GPA and total credits with this term to find your new overall cumulative grade point average.
Free refinance calculator. Compare your current loan payment against a new rate and term to see monthly savings, break-even point and lifetime interest.
Free APR calculator. Include upfront fees in a loan to find the true annual percentage rate, so you can compare offers on an equal, honest basis.
Free 401k calculator. Project your retirement balance from your salary, contribution percent, employer match and expected return over the years to retirement.
Free take-home pay calculator. Estimate net pay per period after taxes and deductions using your own editable tax rate. No live tax lookup, fully private.
Free overtime pay calculator. Work out your total pay from regular and overtime hours at any overtime multiplier such as time-and-a-half or double time.
Free down payment calculator. Find your down payment amount and loan needed from a home price and percent down, or work backwards from savings you have.
Free net worth calculator. Add up your assets and subtract your liabilities to see your total net worth, with a clear assets versus debts breakdown.
Free rent vs buy calculator. Compare the total cost of renting against buying a home over a set number of years to see which comes out cheaper.
Free credit card payoff calculator. See how long a card takes to clear at a fixed payment, the interest cost, and how a bigger payment saves you money.
Free water intake calculator. Estimate how much water to drink per day based on your body weight and exercise, shown in liters, ounces and cups.
Free macro calculator. Split your daily calories into grams of protein, carbs and fat for cutting, maintenance or bulking using your chosen ratio.
Free running pace calculator. Enter any two of distance, time and pace and it solves the third, for miles or kilometers, with a finish time projection.
Free one rep max calculator. Estimate your 1RM from a weight and reps using the Epley and Brzycki formulas, plus a full percentage training chart.
Free calories burned calculator. Estimate calories burned during an activity from your body weight, duration and the activity MET value, computed instantly.
Free gas cost calculator. Estimate the fuel cost of a trip from distance, your vehicle fuel economy and the price you pay, plus cost per person.
Free electricity cost calculator. Work out what an appliance costs to run per hour, day, month and year from its wattage, usage and your price per kWh.
Free time card calculator. Add up daily clock-in and clock-out times minus breaks to get total hours worked for the week, plus estimated gross pay.
Free debt-to-income ratio calculator. Enter your monthly debt payments and gross monthly income to get your DTI percent and a lender-style rating.
Free CAGR calculator. Enter a start value, end value and number of years to get the compound annual growth rate as a clean percentage instantly.
Free Rule of 72 calculator. Enter an annual return rate to estimate how many years it takes your money to double, or find the rate to double by a target.
Free dividend yield calculator. Enter the annual dividend per share and share price to get the yield percent, plus optional shares for annual income.
Free mortgage payoff calculator. See how many months to clear your balance with extra payments, the total interest, and interest saved versus no extra.
Free car affordability calculator. Enter a monthly payment budget, loan rate, term and down payment to find the maximum car price you can afford.
Free freelance rate calculator. Turn your target income, billable hours, expenses and tax rate into the hourly rate you need to charge to hit your goal.
Free break-even calculator. Enter fixed costs, price per unit and variable cost per unit to find the break-even units and the revenue needed to cover costs.
Free profit margin calculator. Enter your cost and selling price to get profit, gross margin percent and markup percent, with the difference made clear.
Free savings goal calculator. Enter your target, current savings, monthly contribution and optional return to find how many months to reach your goal.
Free emergency fund calculator. Enter your monthly essential expenses, months of coverage and current savings to get your target fund and remaining gap.